Paper making machine



Dec. 17, 1940. yw. R.KE| ETT Erm. 2,225,435

lPA }?ER MAKING MACHINE Filed Aug. 6, 193e 14 sheets-sheet 1 265 755 #24/66 Y@ Y@ Y Inh Dec. 17, 1949. w. R. KELLETT Erm. 2,225,435

PAPER MAKING MACHINE Filed Aug e, 195s 14 sheets-sheet 2 De@ 17, 1940-w. R. KELLr-:T-r ET'AL 2,225,435

PAPER iAKING MACHINE.

FledAug. 6, 1936 14 Sheets-Sheet 5 eZZe Dec. 17, 1940. l w. R. KELLETTErm. 225435,

PAPER MAKING MACHINE' Filed Aug e', 1936 14 sheets-shea 4 ,Humm

iiiii' Filed Aug. 6. 1936 14 Sheets-Sheet 5 De@ 17, 1940- w. R.KELLrQ-:TT TAL 2,225,435

P APER MAKING MACHINE 14 Sheets-Sheet 6 Filed Aug. 6, 1936 Dec 17, 1940.w. R. KELLE'TT ETL 2,225,435

PAPER MAKING MACHINE Filed Aug. 6, 1936 14Sheets-Sheefc 7 N @n o n Dec.17,1940.

W. R. KELLETT ETAL PAPER MAKING MACHINE 14 SheetS-Shee'fl 8 Filed Aug.6, 1956 y William jflle' Hczrr Dec. 17, 1940. w. R. KELLET-r er.2,225,435

PAPER MAKING MACHINE Filed Aug. 6, 1956 14 Sheets-Sheet 9 .mlillilllml.

Dec. 17, 1940. Y w. R. KELLET Erm. 2,225,435

PAPER MAKING MACHINE Filed Aug. e, 1956 14 sheets-sheet lo' Det. 17,1940.v w. R. KELLETT arr-m. 2,225,435

PAPER MAKING MACHINE Filed Aug. 6, 1936 14 Sheets-Sheet l1 www@ i www yM Dec. 17, 1940. 1 w. R. KELLETT Erm. 2,225,435

y PAPER MAKING MACHINE Filed Aug. 6, 19156l 14 Sheets-Sheet 12 Pff f22&5 d M-Zzaml/@Zze Harry MOSZe'r@ .By (Samv- 7314.47 @5 m1119110. w. R.KELLETT m.. 2,225,435A

PAPER MAKING MACHINE Filed Aug. 6, 1936 14 Sheets-Shree?I 13 draf/cdv c.17, 'l w. R. KELLETT Erm.

PAPER MAKING MACHINE K A .Y

Filed Aug. V6, 1936 14 Sheets-Sheetrlll fU/ezs: hfZZlz'czm /lfele HarryMser@ peut.; pa. 17, A194i PAPER MAKING MACHINE William R. Kellett,Menasha, and Harry M. Ostertag, Neenah, Wis., assignors to Paper PatentsCompany, Neenah, Wis., a corporation of Wisconsin Application August 6,193s, serial No. 94,516

14;l Claims.

This invention relates .to paper making machines employing travelingscreens of the Fourdrinier type, and more specifically to machinesemploying atype of inlet wherein the stock is pumped directly from themixing box to the inlet through a closed top spout adapted to becompletely filled with a owing charge of stock and having a deliverymouth, in lieu of the more usual intervening open head box. An inletemploying a closed top spout without any intervening head box isdisclosed in Figs. 14 and 15 of Letters Patent No. 2,060,808 datedNovember 17, 1936, and one important object of this invention has beento provide an improved'stock inlet o of this type.

According to the present invention the entire` stock inlet,` with theexception of the bottom lip, is adjustable in a horizontal plane. Thispermits the inlet to be shoved out over the wire or over the breast rollso as to vary, as desired, the area of the wire at which the stock isdisharged onto the latter. The flow passage or duct of the stock inletin our present invention preferably has a. goose-neck form, and tofacilitate the adjustment in a horizontal plane, the gooseneck duct ispreferably connected with the main supply pipe by one or more flexiblepipe connections, which simplify the engineering design and eliminateunnecessary sliding joints which must be maintained water tight.

Other important objects ofthe invention are, to provide an inlet whereinthe cross section is so designed that there are no hydraulic dead areaspresent where stock can clog or settle out, and which will also providefor a high velocity through the inlet; to provide an improvedconstruction of inlet which permits the top nozzle plate to be extendedconsiderably beyond the center line of the breast roll and beyond thelower nozzle plate and/or aprona feature which enables the stock to befurnished to the paper machine at a very low consistency, as low as 116of 1 percent, and at the same time permits the major portion of thisenormous amount of water to be removed before the stock emerges from theinlet, which enables us to obtain a superi-or sheet formation andadequate water removal without the use of an unduly long wire; toprovide improved sealing devices for the ends of the upper nozzle plate,which will function satisfactorily under the considerable sag of thewire between the breast roll and the iirst supporting roll that resultsfrom the high pressure of the stock against the wire; to provide a quickmeans for raising the top nozzle plate to prevent injuring the wire whenthe stock is shut off and the hydraulic pressure relieved, and toprevent injury to the top `lip from the drag of the wire upon it; toprovide an improved form of bottom nozzle plate whereby it may bebrought as close as possible to the center line of the breast roll anddeliver the stock tangent .to the latter and at the same time havesuflicient strength for the span across the machine; to `provide animproved pivot joint for the movable top nozzle plate that will preventleakage and freezing of the joint, while permitting easy angul-aradjustment; and to provide an improved arrangement of the table rollsrelatively to each other and to the breast roll, whereby the greatestamount of water will be removed before the stock emerges from the inlet.

Still other objects and attendant advantages of the invention will beapparent to engineers and others fa-miliar with the paper making artfrom the following description, taken inA connection with theaccompanying drawings in which we have illustrated a paper makingmachine of the Fourdrinier type in which are embodied the severalimproved features hereinabove enumerated, wherein- Fig. 1 is a schematicview lpartly in side elevation and partly in vertical section of ourimproved machine and accessory devices illustrating the sources of stocksupply and direction of flow of the Stock.

Fig. 2 is an enlarged vertical cross section through the machine takenon the line 2-2 of Fig. 1.

Fig. 3 is a plan view of the drain tray that underlies the Fourdrinierwire.

Fig. 4 is a plan section on the line 4-4 of Fig. 1 illustrating themixing tank formation.

Fig. 5 is an enlarged side elevation of the stock inlet and the breastroll and iirst table roll and the Fourdrinier wire associated therewith.

Fig. 6 is a top plan View of the parts shown in Fig. 5.

Fig. 7 is an enlarged vertical longitudinal section on the line 1-1 ofFig. 6.

Fig. 8 is a front elevation of the inlet, broken out, Viewed on line 8 8of Fig. 5. 1

Fig, 9 is a. rear elevation of the inlet, broken out and partly invertical section on line 9--9 of Fig. 5.

Fig. lO is a horizontal section through the inlet-adjusting device, onthe line lil-l0 of Fig. 5.

Fig. 11 is a front elevation of the upper nozzleplate raising mechanismon one side of the machine.

Fig. 12 is a vertical section of the same on line I2-I2 of Fig. 8.

Fig. 13 is an enlarged side elevation of one of the end seals of the tcpnozzle plate.

Fig. 14 is a vertical transverse section on offset line lI-Il of Fig.13.

Fig. 15 is a vertical transverse section through the distributing rolladjusting ymechanism on line |5--l5 of Fig. 16.

Fig. 16 is a vertical longitudinal section through the sanfe mechanismon line iG-.IG of Fig. 15 in a plane at right angles to the sectionalplane of Fig. 15.

Fig. 17 is a front elevation of the distributing roll adjustingmechanism shown in` Figs. 15 and 16.

Fig. 18 is a sectional view through the distributor roll adjustingmechanism taken on the line i8-i8 oi Fig. 15.

Fig. 19 is an elevation of a water doctor for the under side of theFourdrinier wire, as viewed on line I8|8 of Fig. 1.

Fig. 20 is an enlarged side elevation of the same.

Fig. 21 is an enlarged vertical section on line 2|2I of Fig. 19.

Fig. 22 is a fragmentary elevation of a water doctor or wiper for a highspeeddriven table roll.

Fig. 23 is a vertical section of the same on the line 23--23 of Fig. 22.

Fig. 24 is a plan view partly in horizontal section and broken out, ofone of the open-surface wire table rolls.

Fig. 25 is a vertical transverse section of the same on the line 25-25of Fig. 2'4.

Fig. 26 is an enlarged fragmentary cross section of the peripheralportion of the roll.

Fig. 27 is an enlarged fragmentary longitudinal section of theperipheralv portion of the roll.

General organization Fig. 1 of the drawings shows diagrammatically themachine proper and a number of accessory devices that are preferablyemployed therewith. A designates as an entirety the usual Fourdrinierwire, B a tray underlying the wire, and C a mixing tank underlying thetray B. This mixing tank C is normally nearly lled with water that haspassed through the wire A and out of the tray B, and this water, withfresh stock added thereto, is sent back to the inlet nozzle D by acirculating pump E in a flow line F, having a flow-regulating valve F'on the discharge side of the pump. Fresh stock from the beater chestpasses into a De Zurik consistency regulator G. whence the stock flowsinto a machine chest H. Fromlthe machine chest H the stock is moved by apump K through a pipe` line L, to a head-regulating cone S within a coneM. A pump I in a pipe N'maintains a circulation of stock in the chest H;and for convenience the intake of pump K may be connected to thecirculation pipe N as shown. 'From the cone S stock flows through a pipeO having an orifice control indicated at o into one end of the mixingtank C under a constant head maintained by the cone S. The overflow fromcone S into cone M returns through a pipe T to the chest H. A portion ofthe stock in the stuff cone S may also be sent through a pipe P havingan orifice control indicated at p to a Jordan engine Q from which it isdelivered to the pipe O through a pipe R.

At the opposite end of the mixing tank C is a valve-controlled pipe Uthrough which fresh water may be added to the body of stock in the tankas required to maintain a constant level in the tank C. As will be laterexplained, the flow passage in the tank C is divided. and a minorportion of the stock in the tankis sent through a pipe line V, to sprayslater described. Tapping the main flow line F is a branch pipe line Wleading to a sump and-normally closed by a valve X. AlsoV connected atthe `bottom of the tank C is a waste line Y directlyin front of a lowdam Z extending across the flow passage of the tank, by which dirt orother sediment collecting in front of the dam may be drained off.

Bodily adjustable inlet `of clamps 28 and clamp screws 29. Secured in aliquid tight manner, as by welding, to and between the walls 28 arecurved upper and lower plates 3| and "that, with the side walls 2l, forma closed spout ofa generally goose-neck form.

`The cross section of this spout has been so designed that there are nohydraulic dead areas present where stock can clog or settle out. Thedesign also provides for a high velocity flow through the inlet for thesame reason. The interior of the spout is preferably made of stainlesssteel because scum, pitch, and other objectionable substances do notreadily adhere to it. The result of this improvement is that theinterior of the spout remains perfectly clean throughout a run. f

Extending between and connecting the side frames 25 is a cross beam 33(Fig. 7) formed with an integral top plate 8l, the forward portion ofwhich partly overhangs the breast roll 35. Secured to this forwardportion of plate 34 is the stationarybottom lip or nozzle plate 36 ofthe spout, the' forward portion 36' of which lip is inclined downwardlyslightly and extends approximatelyto the center line of the breast rollso as to deliver the stock tangent to the latter. Overlying the forwardportion of the lip is an` oilcloth apron Il, the forward free edge ofwhich overlies the wire at substantially the center line of the breastroll. and the rear portion of the bottom nozzle-plate 36 is a plate 31,to the forward edge of which the forward edge of the lower spout plate82 is secured. Secured to and continuousV with the rear portion of.plate 81 is a depending frame structure 38 lying between and securedtodepending portions of the side walls 26; the frame structure 38constituting `a holder and stiener for` the depending portion of thespout, as clearly shown in Figs. 5 and 7. To the lower end of the frame38 are connected b'y water-tight joints a plurality of `copper duckbills 39` (Fig. 9) that register with the lower end of the spout, andtothese duck bills are connected exible hose sections 39 that aresimilarly connected at their` lower ends to branches F (Figs. 1 and 4)of the underlying flow line F and form flexible parts of said flow line.The plates 3| and 3l are formed with registering slots 4l and 42respectively, through which extends a clamp bolt I3.

Secured to and extending between jthe side walls 26 is a hollow beam M(Fig. 7), to the lower side of which the forward terminal portion of theupper spout wall 3| is welded or otherwise secured. To the front wall ofthe beam 44 is attached, by screw bolts I5, a vertically adjust-Slidable on the top plate 34 .brass upper nozzle plate 53.

able bracket 46, the-screw bolts 45 extending through slots 41 in thetransverse vertical wall of the bracket. Referring to Fig. 12, on thelower edge of bracket 46 is a rib 46, to opposite sides of which aresecured, as by clamp strips 49, a pair of fiber strips 5| that extendbelow the rib 48 and are formed in their opposed faces with bearings forthe brass pintle rod 52 of the One of the dimculties heretoforeexperienced with a hinged top nozzle plate (particularly where the inletis operated under high pressure) is that the joint is usually made witha brass-to-brass contact, and in order to prevent leakage it isnecessary to screw this so tight that the metal joint freezes and canthen be readjusted only with great diiculty. We have overcome thisdiniculty by providing this ber bearing for the nozz'le plate pivot. Theproduct sold under the trade name Micarta is particularly satisfactoryfor the bearing strips 5|, this material comprising a molded admixtureof ber and a synthetic resin binder such as phenol-formaldehyde or ureaformaldehyde, but other non-metallic bearing materials, such as hardvrubber or various of the other synthetic resin-fiber products may beused. We have found by experience that the bottom free edge of the topnozzle plate or slice should be a sharp line. We preferably use achromium-plated square or degree edge, as indicated in Fig. 12, since wehave found that if a soft material is used, and becomes at all rounded,the formation of the mat on the wire is very seriously injured.Experience indicates that the best results are obtained with the topnozzle plate extended considerably beyond the center line of the breastroll and beyond the lower nozzle plate, so as to expose a portion of thewire to the full pressure of the stock. 'I'his removes the major portionof the water before the wire passes beneath the slice and permits theuse of stock of a very low consistency, and hence improves theformation. Under these conditions the slice opening maybe only a smallfraction of that ordinarily used,

vso that subsequent drainage through the mat is reduced to a minimum andthe length of the wire may be correspondingly reduced.

The bracket 46, to the lower end of which the top nozzle plate 53 ispivoted, may be adjusted vertically, after the clamp bolts 45 have beenreleased, by a mechanism fully described and shown in Figs. 4, 8 and 9of our former Patent No. 2,060,808, above referred to. This adjustingmechanism is indicated ,in Figs. 5, 6, and '1, wherein 54 designates across shaft journaled in a pair of brackets 55 mounted on the beam 44,said shaft carrying spiral gears that mesh with internally threadedspiral gears journaled in and confined against up and down movement byhousings carried by the brackets 55. These spiral gears are internallythreaded to engage with screw threaded rods 56, the lower ends of whichare fixed in sockets in the top wall of the bracket 46. On one end ,ofthe shaft 54 is a hand wheel 51, by turning which the bracket 46 isbodily raised and lowered to the desired extent.

Top nozzle plate adjusting mechanism The top nozzle plate 53 is equippedwith manually operated means for adjusting its free edge toward and fromthe Fourdrinier wire, and also with a means, preferably power operated,for quickly raising it to prevent injuring the wire when the stock isshut off and the hydraulic the top nozzle plate operates with the loweredge almost in contact with the wire, and this, with the high stockpressure employed (equivalent to approximately a '75 inch head) bendsthe wire downwardly so that the lower edge of the nozzle plate is belowa line tangent to the top of the breast roll and the first table roll,as shown in Figs. '7 and 12, we have found it necessary to provide aquick acting means for raising the top nozzle plate to prevent injuringthe wire when the stock is shut off and the hydraulic pressure relieved,with the resultant tendency of the wire to resume the straight lineposition between these rolls. If the top `nozzle plate were not quicklyraised, the wire would drag upon it with such a tension as to be injuredthereby.

Describing rst the manual adjusting means, which closely follows thatshown in our former patent above referred to, 58 designates each of apair of forked brackets that are mounted near the sides of the machineon the top wall of the bracket 46, and 59 designates each of a pair ofarmsthat, as best shown in Figs. 11 and 12, are pivoted at 6| to thebrackets 58 and are formed at their free ends with collars 62 thatembrace sleeve nuts 63. Extending through each of the sleeve nuts 63 isa threaded rod 64, the lower end of which is pivoted at 65 to a forkedlug 66 on`the upper edge of a hollow horizontally extending bar 61.Extending crosswise through the bar 61 are a plurality of depending rods68 (Fig. 8), the lower ends of which are pivoted at 69 to forked lugs 1|on the lower end of the nozzle plate 53. The upper portions of the rods68 are threaded to receive upper and lower adjusting and clamping nuts12 and 13, by manipulation of' which each rod 68 may be adjusted up ordown as required.

4Fast with each of the sleeve nuts 63 is a hand wheel 14 through which acoarse adjustment is reffected by raising or lowering the bar 61. Aconsiderable number of the adjusting rods 68, quite closely spaced, areemployed, so that, after the coarse adjustment has beenl effected asdescribed, fine adjustments may be effected so as to insure a true,straight edge on the nozzle plate 53 by individual manipulation of theadjusting means of the rods 68.

The sleeve nuts 63 are normally held rigid by mechanism constitutingpart of the quick adjusting means, which will next be described.

Referring to Figs. 5, 6, '1. 8, 11 and l2, journaled in and between theupper ends of the brackets 56 is a shaft 15, fast on each end of which,between the two limbs of each bracket 58. is an eccentric 16. Mounted onand suspended from the eccentric 16 is a link 11, the lower end of whichis pivoted at 18 to the arm 59 approximately mid-length of the latter.The links 11 thus' normally maintain the arms 59 rigidly in asubstantially horizontal position, as shown in Fig. 12. Mounted on apillow block 19 (Figs. 6 and 8) in turn supported on the bracket 46 is aquick-release electric motor 8|, which, through 'a speed reducer 82,operates a gear fast on shaft 15. In practice, the motor 8l is wired toa push button or other switch within convenient reach of the attendantof the machine so that, when the stock is shut off, the motor 8| isenergized pressure relieved. As a result of the fact that for asufficient period to turn shaft 15 and rock the eccentric 16 upwardlythrough approximately ninety degrees, and this effects a quickraisingmof the nozzle plate and, its manual operating mechanism tosubstantially the dotted line posi-` tion indicated inFig. 12, whereinthelower free ,l

free-of tensional' y r beyond the lower edge ofthe `topnozzleplate, itavoids the formation-ofgipples of water on the edge of the nozzleplate581s drag thereon bythe wire.

Top nozzle plategkejtdlse'als In order that a minimum 'amount of waterneed be removed after the stock emerges from the inlet, the machine isoperated with the lower edge of the top nozzle plate 53 so close to thewire that it almost touches the mat. This is best illustrated in Fig.12. Due to the high pressure of the stock against the Wire, the lattersags considerably between the breast roll and the first table roll, sothat the free edge of the upper nozzle plate is normally considerablybelow a straight line tangent to the tops of these two rolls. As aresult of operating in the manner above indicated, and because of theabove mentioned sag in the wire, it is necessary to have effective sealsat the side ends of the upper nozzle plate to prevent the stocksquirting out at these points when the kwire is under pressure, and toexert equal pressure onthat section of the wire at the edge outside theinlet. These seals are in the general nature of rubber shoes that areattached to the side edges of the top nozzle plate and, of course, movewith the latter.

The preferred structural details of these end seals are best shown inFigs. 13 and 14. As shown yin Fig. 5, the side plates 26 extendforwardly opposite the ends of the top nozzle plate substantially to thefree end of the latter, and to the lower edge of each side plateextension is attached as by screws 83 an angle bar stiffening strip 84.Attached to each end edge of the nozzle plate 53 as by screws 85 is adepending meta1 plate 86, the lower edge of which conforms to the normalcurve of the depressed portion of the wire and lies slightly above thelatter. The rear portion of the plate 86 extends across the inner edgeof the stiffening bar 84 and a, portion of the inner surface of the wall26 and preferably has the rear endv formation indicated by dotted linesin Fig. 13. Mounted in and extending on the outer side of the plate 86is a rod 81, on which is mounted a block 88 of sponge rubber, and aclamp 89 of inverted L-shape in cross section. I'he outer end of the rod81 is threaded to receive a clamp nut 9|, by the turning up of which thesponge rubber block 88 is compressed sidewise and caused to expand in adownward and forward direction. The sponge rubber block 88 is preferablyshod with a live rubber sole 92 that has a relative wiping contact withthe Fourdrinier wire, thus forming a seal against escape of wateredgewise of the wire at the inlet discharge. The joint between the plate86 and the nozzle plate 53 is also sealedby a rubber strip 93 overlyingthe joint on the upper side of the nozzle plate 53 and secured in placeby a spacing strip 94, a clamp strip 95, and screws 98. Between the rearend of the strip 8l and a guard rail 91, which flanks the end edge ofthe stationary 1ower lip or nozzle plate 36, is secured a wooden block98 which forms an end abutment for the sponge rubber block 88, thuslimiting endwlse expansion under lateral compression of the block to aforward direction, and also cooperates with the strip 84 and the guardrail 91 in forming a lateral abutment or support for the metal plate 86to prevent outward spread of the latter under the pressure of the stockflowing past the same.

The above described seal wehave found very effective to prevent lateralescape of theflowing stock as it. is discharged` onto `the wire at andbeyond the breastroll, and as it, does not extend wire such as is causedby *decirle straps that injure the wet surface formation.

We may here remark that, in order that for any given setting of theinlet with respect to the breast'roll, the greatest amount of water willbe removed before the stock emerges from the inlet, we have rfound ithighlyadvantageous to elevate the first and second table rollsconsiderably above horizontal, as is shown in Figs. l, 5, 7 and 12, thesecond roll being preferably slightly higher than the first. This is dueto the fact that because of the catenary of the wire` under the enormouspressures which are exerted upon it when the machine is operating at ahigh head, a portion of the surface of the Wire between the centerlineof the breast roll and the free edge of the upper nozzle plate is notavailable for free drainage because it wraps on the brea'st roll. Byelevating the first table roll we lift the wire away from the breastroll,`which is quite important. Moreover, we preferably lower the wiregradually toward the couch roll by locating thefr table rolls beyond thesecond at a progressively lower elevation, as indicated in Fig. l. Thereis a further advantage in this incline and decline of the wire, becauseit` increases the wrap of the wire on the first table roll.

Distributor roll Machines of this type, if desired, may be equipped witha rotary perforated distributor roll extending across the flow duct inrear of the discharge nozzle to effect a uniform dispersion of the bersin the flowing body of water, and the most efilcient position of thisroll may vary with the pressure and speed of ow,` and the consistencyand other operating conditions of the stock. Hence, it is desirabletoprovide means for adjusting the position of this roll. Accordingly wehave shown a double eccentric mounting for the end spindles` of the rollby which the latter can` be bodily adjusted horizontally or vertically,or in a combined horizontal and vertical direction. The details of thismounting are best shown in Figs. l5, 16, `17 and 18, and referringthereto 99 designates an annular boss on each side wall 28 in which ismounted by a drive flt a bushingring |I. Within-the hollow boss`99is,the hollow hub |02 of an outer eccentric ring |03, which ringhas abearing in the bushing ring |0|. This outer eccentric ring |03 isformed' with an internal transversely concave annular bearing `face |04in which is fitted a fiber bearing ring formed with a spherical outerface; and rotatably mounted in the bearing ring |05 is an innereccentric |08. In the normal position of the two eccentrics their ec-Acentricities are diametrically opposed, as shown in Figs. and 16.

|01 designates the distributor roll, and |08 one of the trunnionsthereof, which is journaled in the inner eccentric |08 through theintermediary of a fiber bushing 09 and a stufling box I2 designates'alocking ring that fits within the hollow hub |02 of the outer eccentric,and is formed with an internal transversely concave surface ||3 thatfits the convex surface of the spherical bearing-ring |05. The lockingring ||2 is forced inwardly and locked in place by a plurality ofthreaded studs I4 that, as shown in Fig. 18, extend through holes in thelocking ring |2 and into tapped sockets ||5 formed in the outereccentric |03. ||6 designates a anged cover plate that is secured to theouter face of the annular boss 99 by a plurality of screws ||1 (see Fig.18). The cover plate ||6 also bears against the outer endjof the hub |02of the outer eccentric, and in the upper portion of the cover plate H6,and in an opposed socket in the boss 99 is journaled a short shaft ||8carrying a pinion ||9 that meshes with a circular rack |2| on theeccentric hub |02 and is formed with a squared outer end for theapplication of a wrench. Attached .to the lower portion of the lockingring 2 is a bracket |22 in which, and in an opposed socket in thelocking ring is journaled a shaft |23 carrying a pinion |24 meshing witha gear rack |25 on the inner eccentric |06 and formed with a. squaredouter end fo-r the application of a wrench.

If it is desired to shift the roll trunnion |08 in a combined upward andforward or upward and rearward direction, this may be accomplished by.partially turning the inner eccentric |06 alone. If it be desired toshift the trunnion in a downward and forward or downward and rearwarddirection, this may be accomplished by shifting the outer eccentricalone. If it be desired to shift the roll trunnion horizontally ineither direction, this may be accomplished by first turning one of theeccentrics which shifts the axis of the trunnion in an inclineddirection, and then turning the other eccentric to thereby restore theaxis to its former horizontal plane; and, by a similar successiveturning of the two eccentrics the axis of the trunnion may be shifted toa vertical direction only. The double eccentric mounting above describedthus makes it possible to shift the trunnions of the distributor roll toany desired position within the range aiorded by the eccentrics. 'I'hepurpose of the spherical bearings of the inner eccentric in which theroll trunnion is journaled is to permit successive adjustments of thetwo trunnions without imposing any bending strain on either thetrunnions or their bearings.

Fig. 1'1 illustrates a simple gauge by which the desired vertical orhorizontal adjustment of the roll spindle may be determined. The twoupper fastening studs or screws ||1 are provided with extensions ||1'reduced at their outer ends to receive and support a horizontal scalebar |26, slidable on which is a sleeve |21, to the upper side ofwhich issecured a pointer |28 overlying the scale on the bar |26, the sleeve |21being secured in adjusted position by a clamp screw |29. From the underside of the sleeve |21 depends a vertical scale bar |3|, on which isslidably mounted a sleeve |32, to the outer side of which is secured avpointer |33, the sleeve |32 being fastened in set position by a clampscrew |34. Also secured to one side of the sleeve |32 is a horizontalgauge bar |35 that is tangent to the top side of the spindle |08.

By the last described device the extent of vertical, horizontal oroblique shift imparted to the roll spindle is known.

A simple means for driving the distributor roll that permits a bodilyadjustment of the roll is shown in Figs. 5, 6, 7 and 9, and comprisesthe following.

|36 designates an electric motor that .is mounted in a yoke |31 pivotedat |38 to an upwardly extending ear on one of the side plates 26. 'I'hemotor shaft carries a sprocket wheel |39 driving- 1y connected by asprocket chain |4| to a sprocket wheel |42 fast on the rear trunnion |08of the distributor roll. Since the shifting of the dis'- tributor rollbodily necessitates either a shortening or lengthening of the sprocketchain |4| or else a shifting of the drive sprocket |39, the yoke |31 issupplied with means for swinging it up or down and locking it in setposition. This means is best shown in Figs. 7 and 9 wherein it will beseen that the free end ofthe yoke |31 enters a vertical slot |43 in theupper end of a bracket |44 that is attached to theouter side of one ofthe side walls 26, and through the lower portion of said bracket extendsan adjusting screw |45 that at its upper end abuts against the loweredge of the yoke |31. Manifestly, by turning the adjusting screw |45 inone direction or the other, the yoke I 31 and the motor carried therebyare raised or lowered, and when the desired tension of the sprocketchain is reached, the yoke is secured in adjusted position by a setscrew I 46.

Air vent When starting up, the ilow duct of the inlet is of coursefilled with air, most of which is preliminarily driven ofi through thedischarge nozzle, but some of which becomes trapped in the upper curvedpart of the goose-neck, and this air is vented to the atmosphere througha. plurality of upstanding pipes |41 in the top wall of the duct thatcommunicate with a horizontal pipe |48 through which the trapped airisAvented to the atmosphere. As soon as the air has been dis- The entirestock inlet, constructed and equipped substantially as above described,is bodily movable on the side frames 25 and cross Referring to Figs. 5,6, 7, 9 and 10, |55 designates each of a pair of hollow castings thatare secured to the rear top portion of the side frames l 25, and areinternally threaded to receive thread- .ed rods |56. Each of these rods|56 extends through and is journaled within the hollow outwardlyextending limb of an angle bracket |51 that is secured to the side wall26 on the outer side of the latter. Fast on the rod |56 is a Worm wheel|58 that, as best shown in Fig. 9, is drivingly engaged by a worm |59fast on each end of a transverse shaft |6| and is also journaled at itsends in the brackets |51. The shaft |6| is intermediately supportedbybearings |62 formed as part of brackets |63 that are mounted on theouter sides of the frames 38, and the shaft |6| has fast thereon a nut|64 that is engaged by a box wrench |65 suspended from the rod |6l. Along handle |65' on the box wrench enables the same to be readilyapplied to the nut |64 and by turning the latter in one direction or theother, the threaded rods |56 are caused to turn ln their stationary nuts|55, thereby bodily adjusting the inlet forwardly or rearwardly, so asto cause the upper nozzle plate 53 to overhang the wire be- .beam 33 bythe following described mechanism.

yond the breast roll to a greater or less extent. By reason of the wormand worm gear drive, the latter is self-locking in any set position.

Table rolls For supporting the wire between the breast roll and thefirst' suction box we preferably employ one or more open-surface wiretable rolls designated as an entirety by |66 (Fig. 1), and one or moresolid-surface tubular table rolls |61 that are driven at a peripheralspeed approximating or exceeding the linear speed of the wire, and inassociation with both sets of rolls we employ a novel water doctor forremoving Water from the under side of the Wire just in advance of eachroll, and in association with the driven rolls we also preferably employa wiper for removing water from the surface of the roll.

'Ihe structural features of one of the opensurface wire table rolls |83are shown in Figs. 24 to 27. The surface-supporting core of the rollincludes a series of heavy round wire helicals 23|. These helicals atintervals are seated in notches 233 in the outer peripheral edge ofaiiat ribbon truss spiral 234 lying within the helicals 23|. Extendingiengthwise ofl the roll` tangent to and supported by the truss spiral234 and the helicals 23| are a large number of thin. iiat parallel bars235, the outer edges oi' which have narrowly spaced notches 236 thatseat the surface member of the roll consisting of a closely wound flatribbon wire helix 231, the pitch of which is so low that its coils areapproximately at right angles to the axis of the roll, as shown in Fig.24. In the ends of the roll are inserted spiders 238 carrying the rolltrunnions 239. As shown in Fig. 24, the rim of the spider lies Withinand supports the end portions of the circular group of longitudinal bars235. and on each end portion of the roll is applied a thin annular guardmember 240 presenting a solid or imperforate surface s'ubstantiallyflush with the surface of the helix 231, which supports the edge of theFcurdrinier wire to prevent said edge from turning down in the spacebetween adjacent turns of the helix 231 and becoming damaged by thescrew action of the rotating roll. This open surface wire table rollforms the subject-matter of a divisional application iiled by usNovember 3, 1938, Serial No. 238,-'

The driven roll |61 is simply the ordinary tubular table roll formedwith a solid or imperforate surface. The rolls |81 are preferablyapproximately 10 inches in diameter, and the open surface rolls I8 areapproximately 12 inches in diameter.

Wire water doctor Another important feature of the present machine isthe wire water doctor that is associated with each of the open and solidrollsabove described.

The preferred structure of this water doctor is illustrated in Figs. 5,19, 20 and 21, wherein |1| designates a screw threaded post that ismounted in a base block |12 that in turn rests on an uridercut groovedrail |13 on the side frame member |14 of the table, the block |12 beingadjustable on and lengthwise of the rail |13 and secured in adjustedposition by clamp bolts |15. |16 designates a sleeve slidably mounted onthe post |1|, and adjustable up and down thereon by nuts |11 and |18. Oneach sleeve |16 is formed a split bearing |19. The body of the doctor,as shown in Fig. 2l, is a hollow casting having a generally funnelshape, the front and rear walls of which are designated by |8| and |82respectively, and the side walls `by |83. To the outer sides of the sidewalls are secured, by machine screws |84,

plates |85 having on their outer sides trunnions |86 engaged with thesplit bearings |19. On the front and rear top edges of the body of thedoctor are mounted stainless steel doctor blades |81 and |88, that forman acute angle with the portions of the wire beyond them, and the upperedges of which blades are beveled to substantially t the under surfaceof the wire. The split bearing |19 is formed with lateral ears or lugs|89 and |9|. In the ear |89 is fixed a threaded rod |92 that extendsthrough the ear -|9| and is equipped with a clamp nut |93 having ahandle |94. Fast on one oi' the trunnions |86 is a handle |95.

By loosening the clamp bolts |15, the doctor is bodily adjustedhorizontally to the desired position in front of the roll, and a roughadjustment of the doctor to the Wire is effected by raising or loweringthe sleeves |18. Angular adjustment to cause the blades |81 and |88 toconform tothe angle of the wire is effected by first backing off thenuts |93 to release the grip of the split bearings |19 on the trunnions|89, then, by means of the handle |95, adjusting the doctor to thecorrectangle relatively to the wire, and then retightening the nuts |93.

This water doctor, and particularly the iirst one after the inlet,removes a very large amount of water from the wire. We have found byexperience that the top of this doctor must be parallel to the wire,which is readily effected by the angular adjustment above described, andthat the blades and particularly the front blade must be at such anangle to the wire that the water will not be thrown up throughthe wireby impact. If these water doctors were not employed there would be toomuch disturbance of the sheet as 'the wire passed over the table rolls,because the water on the under side of the wire would tend to be pushedback up through the latter, thus disturbing the fibrous layer or matteron the wire. This wire water doctor forms the subject-matter of adivisional application filed by us May 11, 1940, Serial No. 334,512.

Solid roll wiper As stated above, the solid rolls |81 may be operated ata peripheral speed in excess of the linear speed of the wire, so thatthey accomplish a wiping action which removes a considerable amount ofwater from the meshes of the wireas the latter passes over the roll.High speed rolls of this character are broadly old and known, but wehave found that a large portion of the Water wiped off the wire by theroll tends to cling to the surface of the roll, and we have thereforeprovided each high speed roll with a wiper which prevents it fromthrowing water back up into the wire on the approach side of the roll.This roll wiper is.illustrated in Figs. 22 and 23 and referring thereto,|98 designates'each of a pair of uprights that are footed on andadjustable lengthwise of the rails |13 in the same manner as thethreaded posts |1| of the wire doctor. On the inner side of each upright|98 is a horizontal bar |91, to the inner face of which is attached, bymeans of machine screws |98 a depending arm |99, the screws |98 passingthrough slots 29| in the upper portion of the arm |99 so as to permit alimited horizontal adjustment of the arm on im support. In and betweenthe lower ends ot the arms |99 is mounted a fixed rod 202, and

